4811551 has 2 divisors, whose sum is σ = 4811552. Its totient is φ = 4811550.

The previous prime is 4811549. The next prime is 4811567. The reversal of 4811551 is 1551184.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4811551 - 2¹ = 4811549 is a prime.

Together with 4811549, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4811581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2405775 + 2405776.

It is an arithmetic number, because the mean of its divisors is an integer number (2405776).

Almost surely, 2^4811551 is an apocalyptic number.

4811551 is a deficient number, since it is larger than the sum of its proper divisors (1).

4811551 is an equidigital number, since it uses as much as digits as its factorization.

4811551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 800, while the sum is 25.

The square root of 4811551 is about 2193.5247890097. The cubic root of 4811551 is about 168.8217370351.

It can be divided in two parts, 481 and 1551, that multiplied together give a triangular number (746031 = T₁₂₂₁).

The spelling of 4811551 in words is "four million, eight hundred eleven thousand, five hundred fifty-one".